In this task, you're given a question, a context passage, and four options which are terms from the passage. After reading a passage, you will get a brief understanding of the terms. Your job is to determine by searching and reading further information of which term you can answer the question. Indicate your choice as 'a', 'b', 'c', or 'd'. If you think more than one option is plausible, choose the more probable option to help you answer the question.

Example Input: Question: On what date did Apollo 11 land at it's destination site? Passage: are three views of Mare Tranquillitatis on the Moon, taken by the mapping camera of the Apollo 17 mission in 1972, facing south-southwest from an average altitude of 111 km on Revolution 36 of the mission. At the left is the east side of Mare Tranquillitatis, with the craters Franz (bottom right), Lyell (dark floor, right of center), and Taruntius (upper left). The "bay" of dark mare (basalt) at left is Sinus Concordiae, with "islands" of older, light highland material. At the right is the crater Cauchy, which lies between the Rupes Cauchy and Cauchy rille. The center photo shows the central mare with craters Vitruvius (lower right) and Gardner (bottom center). At the horizon are lighter highlands at the southern margin of the mare, near the Apollo 11 landing site. The crater Jansen is visible at the edges of both the center and right photos. The right photo shows the western mare, with the craters Dawes (lower left) and the large Plinius (43 km diameter), with the Plinius Rilles in the foreground. These photos were taken within minutes of each other as the command module America orbited the Moon. The Sun elevation drops from 46 degrees at left to 30 degrees at right.
 Links: a. Apollo 11 b. Apollo 17 c. Lyell (lunar crater) d. Plinius (crater)
Example Output: a

Example Input: Question: Who founded the magazine that named Alan Webb the "High School athlete of the Year" in 2001? Passage:Webb attended South Lakes High School in Reston, Virginia. In 1999, he broke Jim Ryun's national sophomore mile record of 4:07.8 by running 4:06.94. During the fall season of his senior year, Webb placed second at the 2000 Foot Locker Cross Country Championships behind Dathan Ritzenhein. At the New Balance Games in January 2001, Webb's mile time of 3:59.86 at New York City’s Armory made him the first American high schooler ever to run a sub-four minute mile indoors. Webb's time broke the previous American indoor high school record of Thom Hunt — a 4:02.7 — as well as Hunt's indoor HS AR in the 1500 m (3:46.6) as Webb came through the 1500 mark in 3:43.27. Webb's record was surpassed fifteen years later by Andrew Hunter from Loudoun Valley High School in Virginia with a time of 3:58.25 set on the same track. Four months later, at the age of 18 years, 4 months, and 14 days, on May 27, 2001 at the Prefontaine Classic, Webb ran a mile in 3:53.43 to shatter Ryun's 36-year-old national high school record of 3:55.3, which placed him first on the list of high school students who have run a four minute mile. En route Webb passed the 1500 mark in 3:38.26 to take down Ryun's 37-year-old high school AR of 3:39.0 set in 1964. He followed up his run at Prefontaine by winning the Virginia State High School 800 m title in 1:47.74 to become the fourth-fastest high schooler ever at that distance. He was Track and Field News "High School Athlete of the Year" in 2001.
 Links: a. Reston, Virginia b. New York City c. Foot Locker Cross Country Championships d. Track & Field News
Example Output: d

Example Input: Question: How long did the conflict where Rashid participated as a junior non-commissioned officer last? Passage:Ashraf Rashid joined in the Pakistan Army in 1964 and had participated in Indo-Pakistani War of 1965 as a junior non-commissioned officer (JNCO). Rashid entered the Pakistan Military Academy in 1966. He graduated two years later and joined the Pakistan Army at the rank of lieutenant. He was selected for the Special Service Group unit, and was sent to United States U.S. Special Forces training school to complete his training. Rashid graduated from the Command and General Staff College in Fort Leavenworth, Kansas. He served in the Indo-Pakistani War of 1971 and participated in the conflict as a captain, during which he was permanently injured on the right cheek. As a special service officer, Rashid was promoted as a Brigadier-General and was later sent to Siachen where he along with then-Brigadier-General Parvez Musharraf, participated in the conflict. In 1995, he was promoted as a major-general and was made commandant of his unit. He was an instrumental for conducting paramilitary operations and infiltrating Kashmiri militants in the Kargil War. He resigned from his position and left the special forces as the failure of Kargil operation which he was widely blamed for.
 Links: a. United States Army Command and General Staff College b. Pakistan Military Academy c. Brigadier general d. Indo-Pakistani War of 1965
Example Output:
d

